import { AcquireOptions } from './registry.js';
export interface ServeOptions extends AcquireOptions {
    file?: string;
}
export interface ServeHandle {
    port: number;
    url: string;
    reused: boolean;
    close(): Promise<void>;
}
/** Acquire (reuse or start) the persistent server and return its viewer URL. */
export declare function serve(opts?: ServeOptions): Promise<ServeHandle>;